Jellyfish Watch
Estimate jellyfish risk at a coastal spot from water temperature, waves, and season.
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Risk score / 100
How to use
- Type a coastal city or beach.
- See a Low / Medium / High jellyfish-risk estimate.
- Review the factors — warm calm water and season raise the odds.
Frequently asked questions
How is the risk calculated?
It combines sea-surface temperature, wave calmness, recent storms, and season — conditions that jellyfish tend to favor — into a weighted score using live marine data.
Why does it say "unknown" for my location?
Marine data only exists for coastal and open-water points. If you enter an inland city there is no sea-surface data, so the estimate cannot be made. Try a beach or coastal town.
🌐 This tool looks up results using the free Open-Meteo marine & weather API. The word you enter is sent to that service to fetch results; nothing is stored by this site.
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